Discover a new level of comfort with this incredibly comfy one-piece thermal underwear for men. Designed to maximize comfort while also flaunting your body, the HIM Lumberjack Union Suit is a stretchy thermal lounge onesie that's perfect for sleep and play. Available in black, white or grey with a deep zipper front for easy on/off, this supremely cozy one-piece body suit from HIM makes any activity more comfortable and sexy.